An amount of money invested for 1 year in tax-free bonds will earn $ 490. In a certain credit union account, that same amount of money will only earn $280 interest in a year , because the interest paid is 3% less than that paid by the bonds. Find the percent rate of interest paid by the credit union.

answer: 88

step-by-step explanation:

answer: 33 ( approx)

step-by-step explanation:

since, in the linear regression formula, the slope is the a in the equation y = b + ax ( by comparing it with the general equation of line y = mx + c )

where,

here given table is,

price ($), x   :           18         23       25       29       30       33

pairs sold, y :         16         13         10       8         6       2

so, ,   ,   ,

and   ,

thus, slop of the given line is,

⇒  

⇒   ≈ 33